Lock



FIG. 1 is a perspective view of the illustrated embodiment of the lock;

FIG. 2 is a plan view of the lock of FIG. 1;

FIG. 3 is a front view of the lock of FIG. 1;

FIG. 4 is an underside view of the lock of FIG. 1;

FIG. 5 is a rear view of the lock of FIG. 1; and,

FIG. 6 is a side view(s) of the lock of FIG. 1. 

The ornamental design for a lock, as described and shown. 